Vein /(?)/

1. One of the vessels which carry blood, either venous or arterial, to the heart. See Artery, 2. (Anat.)
2. One of the similar branches of the framework of a leaf. (Bot.)
3. One of the ribs or nervures of the wings of insects. See Venation. (Zool.)
4. A narrow mass of rock intersecting other rocks, and filling inclined or vertical fissures not corresponding with the stratification; a lode; a dike; -- often limited, in the language of miners, to a mineral vein or lode, that is, to a vein which contains useful minerals or ores. (Geol. or Mining)
5. A fissure, cleft, or cavity, as in the earth or other substance.

   Let the glass of the prisms be free from veins.

6. A streak or wave of different color, appearing in wood, and in marble and other stones; variegation.
7. A train of associations, thoughts, emotions, or the like; a current; a course; as, reasoning in the same vein.

   He can open a vein of true and noble thinking.

8. Peculiar temper or temperament; tendency or turn of mind; a particular disposition or cast of genius; humor; strain; quality; also, manner of speech or action; as, a rich vein of humor; a satirical vein.

   Certain discoursing wits which are of the same veins.

   Invoke the Muses, and improve my vein.

imp. & p. p. Veined; p. pr. & vb. n. Veining

1. To form or mark with veins; to fill or cover with veins.